Blossom Wilt

Monilinia spp.

Blossom Wilt, Brown Rot

1 of 1
Very common plant disease that causes fruits to rot prematurely on the tree. Usually infects the fruit through wounds which could be caused by insects or mishandling. Brown rot can infect fruit after it has been removed from the tree and will carry on to decompose the fruit even in cold storage. Brown Rot can also cause the wilting of blossoms.


Soft brown patches appear on fruit, usually surrounding a wound. Small concentric rings of cotton-like small off-white pustules appear on the surface of the fruit. Eventually, the whole fruit will turn brown and shrivel. Fruit that is on the tree will not fall if infected which enables the spores to be in a prime position to infect other fruits.

Growth factors

Wounds on fruit


Brown soft patches on fruit
Concentric circles of off white pustules
Shriveling of fruit
Blossom wilting and falling.

Biological treatment

Remove fruit that is infected. Be careful not to accidentally store an infected apple with healthy ones to reduce the risk of spread. Prune out any infected wood and remove any trees that are heavily infected and burn them.

Chemical treatment

There are no viable chemical treatments available.


Windblown or insect-borne spores enter the fruit through open wounds (or wounds made by the insect) and the spores germinate. The fungus spreads through the neighbouring tissues and produces white cottony pustules on the surface of the fruit in concentric circles emanating from the wound. The fungi can then infect the spur of the branch and cause a canker on the wood.


Avoid unnecessary damage to fruit in situ and in harvesting. Pest management to reduce possible wounds on fruit. There are some varieties that are resistant to the fungus but in heavy outbreaks in a crop, the resistance won't hold up.

Be the first to download the app

Help us build a place where community meets knowledge. Try it out and let us know what you think.
Download on the App StoreGet it on Google Play

What is Candide?

Candide has everything for plant lovers – buy plants from independent sellers and book tickets to visit inspiring gardens near you. Identify plants in seconds from a single photo and learn how to care for them with our in-depth guides.


Learn how to care for your plants and share your growing successes on Candide’s free app for your phone or tablet.

Download on the App StoreGet it on Google Play

Germinated in Bristol © 2021 Candide